幅流风机对地铁列车车厢内风环境与乘客舒适度的影响

Influence of Cross-flow Fan on the Compartment Airflow and Passenger Comfort in Metro Train

以地铁列车车厢内空气流速为主要研究对象,对多条线路不同车型的车厢内风速进行实车测试,同时对车厢内乘客进行舒适度调查,分析了地铁列车车厢内环境现状。基于实测及调查结果,采用计算流体力学法,建立地铁列车B型车满载车厢模型,分别对未加载幅流风机且空调送风温度20℃、加载幅流风机且空调送风温度20℃、加载幅流风机且空调送风温度22℃等3个工况的客室流场进行模拟,研究幅流风机对车厢内环境与乘客舒适度的影响。研究结果表明:加载幅流风机能改善车厢内气流组织,提高流场均匀度,从而大大提高车内乘客的舒适性。

Taking the compartment airflow in metro train as the research target,the airflow velocities in different metro trains are measured on the spot,the passenger comfort is surveyed to analysis the interior environment of metro train.Based on the measured data,the CFD(computational fluid dynamics)simulation is used to establish a full load subway model of type B vehicle and simulate the cabin flow distribu原tions in 3 different conditions:when the supplied air temperature is 20益with cross-flow fan,20益temperature without crossflow fan,and 22益temperature with cross-flow fans,in order to study the influence of the cross-flow fan on the interior environment and passenger comfort.The simulation results show that the cross-flow fan can improve the airflow inside the vehicle,the uniformity of the flow field,and the passenger comfort in the vehicle greatly.